what does it take to regear a 1981 300 gd for a higher top speed?
 

any insights as to the possibility of getting 75+ mph out of a 1981 300 gd? is it possible to regear these drivetrains? what kind of work and what kind of money would i be lookin at in parts and labor if i had a shop do it? is it a diy type project? would an intercooler help with top speed at all? do they make an overdrive for that model? thanks, everyone. everythings a learning process with me, haha.

Dude, its a 1980's G Wagen..... It wasn't built for highway cruising....